A computer-based biomechanical analysis of the three-dimensional motion of cementless hip prostheses
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Cited by (31)
Simultaneous and multisite measure of micromotion, subsidence and gap to evaluate femoral stem stability
2012, Journal of BiomechanicsCitation Excerpt :Micromotion has already been measured on cadaveric femurs, but only on a limited number of simultaneous locations. The values of micromotion reported here are compatible with other cadaveric measurements (Walker et al., 1987; Gilbert et al., 1992; Buhler et al., 1997; Britton et al., 2004). Although the comparison is not always easy because of different techniques and loading conditions, most cadaveric studies report maximal amplitude of micromotion and subsidence of about 100 μm, with higher values on the medial than on the lateral side.
A new technique to measure micromotion distribution around a cementless femoral stem
2011, Journal of BiomechanicsCitation Excerpt :However, even if the problem is clearly observed and partly quantified, measurement methods are not fully satisfactory. Most of the studies are using linear variable differential transducers (LVDT’s) (Walker et al., 1987; Gilbert et al., 1992; Buhler et al., 1997; Britton et al., 2004; Gheduzzi and Miles, 2007) which do not really measure the local relative micromotion between the stem and the bone, but also include bone deformation between the device fixation and the measurement site. Besides, the number of simultaneous measurement points is limited to 1 or 2, with a reported maximum of 4 (Cristofolini et al., 2003).
Primary stability of custom and anatomical uncemented femoral stems. A method for three-dimensional in vitro measurement of implant stability
2010, Clinical BiomechanicsCitation Excerpt :If the exact distances from the centre axis of the stem to the measuring points at the surface of the stem are measured before insertion of the prosthesis, the bone-implant interface micromotion at the anterior, lateral and posterior aspect of the prosthesis could be measured at any desired levels of the stem using our method. A method for full three-dimensional reconstruction of the implant–bone interface movement has been presented earlier (Gilbert et al., 1992), but this method assumed that both the prosthesis and the bone could be considered as rigid bodies, not accounting for the local elastic deformations, especially those of the bone. If the inserted stem follows the rigid body assumption, then the measuring device can theoretically be attached anywhere to the stem.
Measurement of the migration of a cemented hip prosthesis in an in vitro test
2001, Clinical BiomechanicsDesign and evaluation of a device for measuring three-dimensional micromotions of press-fit femoral stem prostheses
1997, Medical Engineering and PhysicsEffects of porous coating, with and without collar support, on early relative motion for a cementless hip prosthesis
1993, Journal of Biomechanics